Gas Pressure Regulator RMG 322
General Description
322.00 edition 03/2003
Serving the Gas Industry - WORLDWIDE
Gas Pressure Regulator RMG 322 Application • for gas supply in the community grid, in workshops and industrial plants • for natural gas and all non-corrosive gaseous media
Characteristics • large inlet pressure range • can be provided with various valve sizes to improve rangeability • valve inlet pressure compensation • easy maintenance due to interchangeable cartridge assemblies (plug-in system) • special versions for differential pressure regulation and as zero governor
1.Technical Data Max. inlet pressure pemax
20 bar
outlet pressure range
Wh 0,01 bar to 15 bar
sizes
DN 25 to DN 100
connections
DIN-flanges PN 16 acc. to DIN 2501 and flanges acc. to ANSI 150 RF
accuracy class (AC) and lock up pressure class (SG)
AC ≥ 1
lock-up pressure zone
SZ 2,5
material
valve body diapgragm case internal parts diaphragms, gaskets pilot
ambient temperature range class 2
- 20 °C to + 60 °C
function and strength
acc. to EN 334
PED / CE; DIN- DVGW
approved
2
SG ≥ 5
cast steel, ductile iron (DN 80 and DN 100) sheet steel aluminium, brass, steel synthetic rubber aluminium, brass, steel
Gas Pressure Regulator RMG 322 outlet pressure range pilot
load limiting unit
control unit
specific pressure spring range Wa in wire-dia. [bar] [mm]
RMG 610 (RS 10d)
RMG 650
measuring unit "M"
loading pressure unit automatic loading pressure unit
pilot type
0,1 to 1,5
3,3
measuring unit "N"
0,5 to 5
4,7
measuring unit "M"
1 to 16
8 RMG 650
1 to 10 above pa
5
specific outlet pressure range Wa in [bar]
spring wire-dia. [mm] colour
No.
0,010 - 0,040 0,020 - 0,060 0,040 - 0,120 0,080 - 0,200 0,100 - 0,500
2,5 3,0 3,5 4,0 5,0
white yellow green red blue
1 2 3 4 5
0,1 - 1,5 0,2 - 2,5 0,3 - 3,5
3,3 4,0 4,5
green blue brown
6 7 8
1- 5 2 - 10 5 - 15
5,6 6,3 7,0
yellow brown red
9 10 11
valve date size
valve seat-dia. in mm
KG-value in m3/h for natural gas Ď n=0,83 kg/m3
max inlet pressure pemax*) in bar for actuator size 1 size 2
DN 25
20 33
220 480
DN 50
25 31 41 50
400 800 1300 1600
16 16 16 16
25 31 41 50 60 80
400 900 1500 1800 2700 4000
16 16 16 16 10 (16) 6 (12)
25 31 41 50 60 80 100
400 850 1400 1750 3000 4500 5800
16 16 16 16 10 (16) 6 (12) 4 (8)
DN 80
DN 100
16 16
length A in mm
184
254
298
352
**) The limitation of the inlet pressure range ∆ pe for a diaphragm assembly is not given for reasons of material strenght but in the interest of maintaining the regulating accuracy. The inlet pressure deviations though may not exceed the limit of the valve´s nominal pressure rating.
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Gas Pressure Regulator RMG 322 3. Design and function This gas pressure regulator was designed to keep the outlet pressure of a gaseous medium constant in the mains and independent of disturbing influences like inlet pressure and/or flowrate changes. The RMG 322 consists of a main valve with diaphragm assembly, and a pilot with preceeding fine filter. For regular maintenance the integral parts of the main control element and the actuator can easily be taken out of the body and subjected to a visual inspection. In case of failure the modules can be replaced by spare units, and the repair works can be carried out in the workshop without having to shut down thesystem. The main control element of the main valve is provided with an inlet pressure compensating diaphragm and can be equipped with orifices and actuators of various sizes. The outlet pressure is controlled by a pilot with adjustable load limitor. The pressure differential between inlet pressure pe and outlet pressure pa serves as auxiliary energy to actuate the main valve control element via the diaphragm assembly. Optimal regulating stability can be reached by adjusting the load limiting pressure to adapt the regulator to particular site conditions. The outlet pressure to be controlled is fed to the pilot through the measuring line. The measuring diaphragm takes up the actually prevailing outlet pressure and compares it to the pre-adjusted setpoint value given by the setpoint spring. Any deviation of the outlet pressure from the setpoint will cause a corresponding change of the loading pressure fed to the actuator, which controls the position of the valve plate. The resulting change in flowrate will re-adjust the outlet pressure to the setpoint. Via the return line the outlet pressure is also supplied to the underside of the actuator diaphragm, giving a direct influence upon the position of the valve plate and enabling fast regulation by the main valve. The regulator gives tight shut-off on zero flow.
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Gas Pressure Regulator RMG 322
control unit
pilot RMG 610
setpoint spring
vent line
measuring diaphragm
measuring line bleed line loading pressure line
bleed valve vent line
load limiting unit actuator
return line
Filter RMG 905 compensating diaphragm valve plate main valve body
main valve
inlet pressure outlet pressure load limiting pressure loading pressure atmosphere
5
Gas Pressure Regulator RMG 322 2. Dimensions
B
C
E
D
F
A
size
main
actuator
valve body
size 1
size 2
A
B
C
D
E
F
C
D
E
F
DN 25
184
60
265
285
370
300
340
360
430
400
DN 50
254
90
410
430
560
400
DN 80
298
DN 100
352
130
size
dimensions of connection lines pilot
actuator
measuring
bleed
line
line
6
size 1
connection for
size 2
pilot vent lines
pipe12 x 1,5
DN 25 DN 50
pipe
pipe
DN 80
12 x 1,5
12 x 1,5
DN 100
return line
pipe 16 x 2
16 x 1,5
Gas Pressure Regulator RMG 322 4. Ordering details (examle) RMG 322
type
25
- 20 /
1
20 33 25 31 41 50 25 31 41 50 60 80 25 31 41 50 60 80 100
1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
/
1
/ So
RMG 332
size DN 25 DN 50 DN 80 DN 100
25 50 80 100
valve seat diameter and actuator size DN 25
DN 50
DN 80
DN 100
pilot type
version
RMG 610
MN
0,010 - 0,040 0,020 - 0,060 0,040 - 0,120 0,080 - 0,200 0,100 - 0,500
1 2 3 4 5
RMG 610
MM
0,1 - 1,5 0,2 - 2,5 0,3 - 3,5
6 7 8
1- 5 2 - 10 5 - 15
9 10 11
RMG 650
special version
outlet pressure range Wa in bar
So
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We supply you with products for gas pressure regulation: RMG REGEL + MESSTECHNIK GMBH Osterholzstrasse 45, D-34123 Kassel, Germany Telephone (++49) 561 5007-0 • Fax (++49) 561 5007-107 gas pressure regulators and safety devices
RMG-GASELAN Regel + Meßtechnik GmbH Julius-Pintsch-Ring 3, D-15517 Fürstenwalde, Germany Telephone (++49) 3361 356-60 • Fax (++49) 3361 356-836 gas pressure regulating equipment, displacement meters, complete stations
Bryan Donkin RMG Gas Controls Ltd. Enterprise Drive, Holmewood, Chesterfield S42 5UZ, England Telephone (++44) 1246 501-501 • Fax (++44) 1246 501-500 gas pressure regulating equipment, below ground gas control modules
Bryan Donkin RMG Co. of Canada Ltd. 50 Clarke Street South, Woodstock, Ontario N4S 7Y5, Canada Telephone (++1) 519 5398531 • Fax (++1) 519 5373339 domestic regulators and safety devices
The other RMG Companies: RMG Messtechnik GmbH Otto-Hahn-Strasse 5, D-35510 Butzbach, Germany Telephone (++49) 6033 897-0 • Fax (++49) 6033 897-130 turbine meters, vortex meters, correctors, flow computers, odorizers
Karl Wieser GmbH Anzinger Strasse 14, D-85560 Ebersberg, Germany Telephone (++49) 8092 2097-0 • Fax (++49) 8092 2097-10
Beindersheim branch Heinrich-Lanz-Strasse 9, D-67259 Beindersheim, Germany Telephone (++49) 6233 3762-0 • Fax (++49) 6233 3762-40 data logging, monitor systems, danger alarm systems
WÄGA Wärme-Gastechnik GmbH Osterholzstrasse 45, D-34123 Kassel, Germany Telephone (++49) 561 5007-0 • Fax (++49) 561 5007-207 design and assembly of gas pressure regulating and metering stations
The RMG Group of Companies on the internet: http://www.rmg.de
Serving the Gas Industry - WORLDWIDE
We reserve the right for technical changes